[Mono-bugs] [Bug 52395][Wis] Changed - System.Buffer.BlockCopy is slower than System.Array.Copy
Wed, 5 May 2004 06:43:21 -0400 (EDT)
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Changed by firstname.lastname@example.org.
--- shadow/52395 2004-05-05 06:27:01.000000000 -0400
+++ shadow/52395.tmp.17730 2004-05-05 06:43:21.000000000 -0400
@@ -76,6 +76,13 @@
change 128 to 1280 (so copying time dominates), the two methods have
approx the same performance.
------- Additional Comments From email@example.com 2004-01-09 12:08 -------
No, because Array.Copy must check arguments. BlockCopy only works
with primative structures, otherwise, it does not do any checks.
+------- Additional Comments From firstname.lastname@example.org 2004-05-05 06:43 -------
+BlockCopyInternal could be changed to do the ByteLength checks in
+unmanaged code and return an error code which is check in managed code
+to throw an exception. This would eliminate the two additional icalls.
+See also the other bug report for how to implement ByteLength with a
+fast jit opcode.